Convert them all to the same per x hours and then compare them. You can either convert them all to unit rates (x = 1) or some other rate (eg lcm of 16, 50, 15 and 20).
I'll use unit rates:
800 miles per 16 hours = 800 ÷ 16 miles per 16 × 16 hours = 50 mph
1500 miles per 50 hours = 1500 ÷ 50 miles per 50 ÷ 50 hours = 30 mph
600 miles per 15 hours = 600 ÷ 15 miles per 15 ÷ 15 hours = 40 mph
900 miles per 20 hours = 900 ÷ 20 miles per 20 ÷ 20 hours = 45 mph
50 mph is the greatest unit rate
→ 800 miles per 16 hours is the greatest rate.
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The rates can be ordered:
50 > 45 > 40 > 30
→ 800 miles per 16 hours > 900 miles per 20 hours > 600 miles per 15 hours > 1500 miles per 50 hours.
The average rate is exactly 220 miles per 4 hours. The unit rate is 55 miles per hour.
Write each rate as a unit rate 70 miles in 2 hours
Distance = Rate * Time or, for our purposes, Rate = Distance/Time Rate = 200 miles/4 hours = 50 miles per hour ==============
Unless you know the rate the miles can not be derived from miles.
Distance = Rate * Time or, algebraically manipulated for our purposes Time = Distance/Rate Time = 212 miles/70 mph = 3.0 hours ----------------
If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?If they travelled 350 miles in 7 hours, what rate of speed were they doing?
To get the rate for 250 miles in 5 hours, divide the miles by the hours to get miles per hour, 250 miles/5 hours=50 miles per hour. If you divide 5 hours by 250 miles, you get 0.02 hours per mile, the other unit rate for this set of numbers.
The average rate is exactly 220 miles per 4 hours. The unit rate is 55 miles per hour.
Divide the number of miles by the number of hours to obtain the unit rate. You should get: 128 miles / 2 hours = 64 miles per hour
Write each rate as a unit rate 70 miles in 2 hours
Distance = Rate * Time or, for our purposes, Rate = Distance/Time Rate = 200 miles/4 hours = 50 miles per hour ==============
Distance = Rate * Time or, for our purposes Rate = Distance/Time Rate = 24986.73 miles/216.06 hours = 115.65 miles per hour -------------------------------
120 miles / 3 hours = 40 miles per hour
Distance = Rate * Time manipulated, Rate = Distance/Time Rate = 22 miles/2.5 hours = 8.8 miles per hour ===============
288 miles
Unless you know the rate the miles can not be derived from miles.
The rate of speed is 11.43 miles per hour